On-Board AC Charger

ABYSS® On-Board 12V 40A High-Precision Marine Battery Charger

Name: ABYSS® On-Board 12V 40A High-Precision Marine Battery Charger
Brand: Abyss Battery
SKU: AB-CRG-12V40A
Price: 549.99 USD
Availability: InStock
Rating: 5.0 (2 reviews)

$549.99

14.6V
40A
584W
IP65 SEALED

SKU: AB-CRG-12V40A

Multi-Chemistry Compatibility – Supports Lithium (LiFePO₄), AGM, and Lead-Acid batteries
Smart Charging Profiles – Automatically optimizes charge cycles for battery longevity
Marine-Grade Construction – Rugged design for offshore and inshore installations
Ideal for House Battery Systems – Reliable onboard charging between trips

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Ships in 70 hours

2-Year Free Replacement Warranty
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Designed in Florida

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Product Overview

CHARGE WITH CONFIDENCE

Get your boat ready for your next day on the water. ABYSS® Single-Bank Marine Battery Chargers deliver dependable onboard charging, with a 12V 40A model for house batteries and dedicated 24V and 36V models for lithium trolling motor batteries.

Built for marine use, these chargers combine durable construction with intelligent charging technology and built-in safeguards to help protect your battery throughout the charging process. Choose the model that matches your battery’s voltage, chemistry, and charging requirements for dependable performance between trips.

Whether you’re recharging after a full day of fishing or preparing for an early launch, ABYSS® keeps charging straightforward. Backed by a two-year warranty, each charger is a dependable addition to your boat’s power system.

Specifications

Electrical16 specs

Charger type
On-Board AC Marine Charger

Power source
AC shore power

Input voltage
100–240 VAC, single phase

Input voltage range
90–264 VAC

Input frequency
47–63 Hz (50/60 Hz)

Max input current
16 A at 100 VAC (≈ 6 A at 120 VAC), full load

Nominal battery voltage
12 V

Charge (output) voltage
14.6 V DC ± 0.3 V (3.65 V/cell × 4)

Charge current
40 A ± 5%

Rated output power
584 W

Number of banks
1

Output configuration
1 × 12 V / 40 A

Battery chemistry
12 V (4S) LiFePO₄ with integrated BMS

Charge profile
Automatic CC/CV — constant current → constant voltage → auto-shutdown at full charge

Termination current
2.0–4.0 A (output switches off)

Efficiency
> 88% at 230 VAC, full load
Mechanical & Connections9 specs

Dimensions (L × W × H)
11.6 × 4.8 × 3.33 in (295 × 122 × 84.6 mm)

Weight
7.7 lb (3.5 kg)

Housing
Die-cast aluminum, black anodized, sealed

Cooling
Active — 80 × 80 × 15 mm fan on the fin stack

Mounting
4 slotted feet, 0.28 in (7 mm) slots on 10.63 in (270 mm) centers; M6 / ¼ in fasteners

AC connection
IEC 60320 C14 inlet with sealing cover; detachable NEMA 5-15P → C13 cord (SJT 16 AWG, ≈ 5 ft) included

DC connection
2 × 6 mm² (≈ 9 AWG) leads, ≈ 59 in (1.5 m), red (+) / black (−), M8 (5/16 in) ring terminals

Status indicator
Tri-color LED (green / blue / red) on the DC-output end

What's in the box
Charger with pre-terminated DC leads, NEMA 5-15P → C13 AC cord, product manual & data sheet
Environmental, Protection & Warranty9 specs

Ingress protection
IP65

Operating temperature
14 to 104 °F (−10 to 40 °C)

Storage temperature
−40 to 158 °F (−40 to 70 °C)

Relative humidity
5–95% non-condensing

Protections
Short-circuit; Over-voltage (≥ 1.05 × Vout); Over-current (≥ 1.1 × Iout); Reverse polarity; No-load; Over-temperature

Ignition protected
Yes

Certifications
CE, FCC, ABYC compliant

Compatible batteries
ABYSS 12V 60Ah, 120Ah, 150Ah, 206Ah and 460Ah dual-purpose lithium batteries (60 Ah and larger, rated ≥ 40 A charge)

Warranty
2-year free replacement, then 35% off a replacement through year 5 (manufacturing defects)

ABYSS® 12V40A Charger

Smart AC Charging
Controlled charging gets your batteries ready for the next trip.
Built-In Safeguards
Voltage and temperature protection help safeguard your battery during charging.
Dedicated Single-Bank Design
Purpose-built to charge one compatible battery bank, providing a focused charging solution for your onboard power system.
Built for Marine Environments
Rugged construction is designed to withstand moisture, vibration, and the everyday demands of life on the water.

Smart AC Charging

Controlled charging gets your batteries ready for the next trip.
Built-In Safeguards

Voltage and temperature protection help safeguard your battery during charging.
Dedicated Single-Bank Design

Purpose-built to charge one compatible battery bank, providing a focused charging solution for your onboard power system.
Built for Marine Environments

Rugged construction is designed to withstand moisture, vibration, and the everyday demands of life on the water.

Manuals & Resources

Learn Before You Launch

Buying Guide

Pick the right battery

Charging Tips

Maximize cycle life

Installation Gallery

See real builds

The Abyss advantage

100% Usable Capacity
Unwavering Power
Exceptional Voltage Stability
Compact, lightweight design

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ABYSS® On-Board 12V 40A High-Precision Marine Battery Charger

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CHARGE WITH CONFIDENCE

Specifications

DETAILS THAT MAKE THE DIFFERENCE...

Smart AC Charging

Built-In Safeguards

Dedicated Single-Bank Design

Built for Marine Environments

Manuals & Resources